Has this scope been "re-engineered?"

I just received a Vector Optics Marksman 10x44 scope which I purchased used from an AGN member. Everything looks good--except I see no way to reset the turrets. It looks like someone has replaced the removable screws on top of the turrets with a non-removable disk. The small manual that comes with the scope doesn't address this, and I can't find any pics of this scope on the internet that look like this. 

Is this something done at the factory or has someone done their own "engineering" on the scope? Thanks in advance for your help. 

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Thanks for the ideas. It's hard and has some thickness to it; not like tape. I've tried pressure in the center in order to turn it. I've tried gently putting a small blade in the seam and prying it. No success. 

I believe the seller sent the scope without knowing that this was an issue. When I contacted him he said he didn't know how to reset the turrets and suggested I look for a Youtube video.